芳伯胺酸性染料光稳定固色剂的合成与应用

Synthesis and application of photo-stability fixing agent for the acid dyes with aromatic primary amine group

酸性染料上染锦纶时存在染色不深、湿处理牢度低、耐光稳定性差等问题,利用固色剂固色是解决上述问题的有效途径。在水相中,以三聚氯氰、4-氨基-2,2,6,6-四甲基哌啶和对位酯为原料,合成分子内同时具有光稳定化片段和一氯均三嗪、乙烯砜硫酸酯双活性基的新型反应性固色剂M1。选用带有芳伯胺基团的商品染料C.I.酸性绿20对锦纶织物进行染色与固色,对比研究常规酸性染料染色、M型活性染料染色(60℃或98℃固色)这两种染色工艺中,C.I.酸性绿20对锦纶织物的染固色性能的影响。结果表明:与M型活性染料染色(60℃或98℃固色)工艺相比,常规酸性染料染色工艺获得的染色与固色效果最佳。当染料C.I.酸性绿20用量为2%o.w.f,固色剂M1用量为3%o.w.f,染浴pH为4.5,同浴染固色温度为98℃,时间为60 min条件下,C.I.酸性绿20对锦纶的上染率为98.8%,固色率达到73.5%,远优于M型活性染料染固色工艺。在此工艺下,染色锦纶织物的耐皂洗牢度、耐摩擦牢度、耐日晒牢度均达到4或5级,优于未加固色剂M1整理的C.I.酸性绿20锦纶染色织物。固色剂M1的合成简单,固色效果优异,该研究结果可为以均三嗪结构为桥基的固色剂的工业化生产提供参考。

There are some problems in nylon dyeing with acid dyes such as not deep dyeing,low wet treatment fastness and poor light fastness stability.The use of fixing agents to fix the color is an effective way to solve the above problems.A new reactive color fixing agent M1 was synthesized from cyanuric chloride,4-amino-2,2,6,6-tetramethylpiperidine and para ester in aqueous phase,which contained photo-stabilized fragment and double active groups of mono-chlorotriazine and vinyl sulfone sulfate.The commercial dye C.I.Acid Green 20 with primary aromatic amine groups was utilized to dye and fix nylon fabric.In the two dyeing processes of conventional acid dyeing and M-type reactive dyeing(fixing at 60℃or 98℃),the influence of C.I.Acid Green 20 on the dyeing and fixing performance of nylon fabrics was compared and studied.The results demonstrated that the conventional acid dyeing process had the better dyeing and fixation effect compared with M-type reactive dyeing(fixing at 60℃or 98℃).The dye uptake of C.I.on nylon was 98.8%,and the fixation rate was 73.5%,much better than those of M-type reactive dyes under the following conditions:dosage of C.I.Acid Green 202%o.w.f,dosage of fixing agent M13%o.w.f,bath pH 4.5,dyeing temperature 98℃and time 60 min.Under this process,the soaping fastness,rubbing fastness,and light fastness of dyed nylon fabric all reached Level 4 or 5,better than that of the C.I.Acid Green 20 nylon dyed fabric finished without color agent M1.The color fixing agent M1 is simple to synthesize and has excellent color fixation effect.The research provides a reference for the industrial production of color fixing agents with a s-triazine structure as the bridge base.